﻿<!DOCTYPE html>
<!-- saved from url=(0014)about:internet -->
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <meta http-equiv="X-UA-Compatible" content="IE=8">
    <style type="text/css">
        body, html {
            width: 100%;
            height: 100%;
            margin: 0;
            font-family: "微软雅黑";
        }

        #allmap {
            width: 100%;
            height: 100%;
            overflow: hidden;
        }

        #result {
            width: 100%;
            font-size: 12px;
        }

        dl, dt, dd, ul, li {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        p {
            font-size: 12px;
        }

        dt {
            font-size: 14px;
            font-family: "微软雅黑";
            font-weight: bold;
            border-bottom: 1px dotted #000;
            padding: 5px 0 5px 5px;
            margin: 5px 0;
        }

        dd {
            padding: 5px 0 0 5px;
        }

        li {
            line-height: 28px;
        }
    </style>
    <script type="text/javascript" src="http://api.map.baidu.com/getscript?v=2.0&ak=fK6S4f6mbwXECk1toHhckpvTUoedKxNd"></script>

    <!--加载鼠标绘制工具-->
    <script type="text/javascript" src="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.js"></script>
    <link rel="stylesheet" href="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.css" />
    <!--加载检索信息窗口-->
    <script type="text/javascript" src="http://api.map.baidu.com/library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.js"></script>
    <link rel="stylesheet" href="http://api.map.baidu.com/library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.css" />
    <script type="text/javascript" src="http://api.map.baidu.com/library/GeoUtils/1.2/src/GeoUtils_min.js"></script>


    <title>鼠标绘制工具</title>
</head>
<body>
    <div id="allmap" style="overflow:hidden;zoom:1;position:relative;">
        <div id="map" style="height:100%;-webkit-transition: all 0.5s ease-in-out;transition: all 0.5s ease-in-out;"></div>
    </div>
    <div id="result">
        <input type="button" value="获取绘制的覆盖物个数" onclick="alert(overlays.length)" />
        <input type="button" value="清除所有覆盖物" onclick="clearAll()" />
    </div>
    <script type="text/javascript">

        // 百度地图API功能
        var map = new BMap.Map('map');
        var poi = new BMap.Point(116.307852, 40.057031);
        var mk;
        map.centerAndZoom(poi, 16);
        map.enableScrollWheelZoom();
        var overlays = [];
        var poly = 1;
        var overlaycomplete = function (e) {
            overlays.push(e.overlay);
        };
        var styleOptions = {
            strokeColor: "red",    //边线颜色。
            fillColor: "red",      //填充颜色。当参数为空时，圆形将没有填充效果。
            strokeWeight: 3,       //边线的宽度，以像素为单位。
            strokeOpacity: 0.8,       //边线透明度，取值范围0 - 1。
            fillOpacity: 0.6,      //填充的透明度，取值范围0 - 1。
            strokeStyle: 'solid' //边线的样式，solid或dashed。
        }

        //实例化鼠标绘制工具
        var drawingManager = new BMapLib.DrawingManager(map, {
            isOpen: false, //是否开启绘制模式
            enableDrawingTool: true, //是否显示工具栏
            overlay: [],
            drawingToolOptions: {
                anchor: BMAP_ANCHOR_TOP_RIGHT, //位置
                offset: new BMap.Size(15, 15), //偏离值
                drawingModes: [BMAP_DRAWING_POLYGON],
            }, polygonOptions: styleOptions //多边形的样式
        });
        map.addControl(new BMap.NavigationControl());
        drawingManager.addEventListener('polygoncomplete', polygonComplete);
        //添加鼠标绘制工具监听事件，用于获取绘制结果
        drawingManager.addEventListener('overlaycomplete', overlaycomplete);
        function clearAll() {
            for (var i = 0; i < overlays.length; i++) {
                map.removeOverlay(overlays[i]);
            }
            overlays.length = 0
            poly = null;
        }
        var geolocation = new BMap.Geolocation();
        geolocation.getCurrentPosition(function (r) {
            if (this.getStatus() == BMAP_STATUS_SUCCESS) {
                //mk = new BMap.Marker(r.point);
                //map.addOverlay(mk);
                map.panTo(r.point);
            }
        }, { enableHighAccuracy: true })

        document.getElementsByClassName('BMapLib_polygon')[0].addEventListener('click', function (e) {
            map.removeOverlay(poly);
            poly = null;
            alert('ok');
        })

        //围栏结束
        function polygonComplete(ply) {
            // new一个新的多边形,将绘制工具画好的多边形抛弃掉
            //poly = new BMap.Polygon(ply.getPath(), styleOptions);
            window.external.jsCallPolygon(JSON.stringify(ply.getPath()));
            if (overlays.length) {
                map.removeOverlay(overlays[0]);
                overlays.length = 0;
            }
            poly = ply;
            overlays.push(poly);
            
            //setLocation(116.307852, 40.057031);
        }

        function setLocation(x, y) {
            poi = new BMap.Point(x, y);
            try {
                if(poly)window.external.check(JSON.stringify(poi));
                //alert(poly == null);
                if (!poly) {
                    return;
                }
                map.removeOverlay(mk);
                var mk = new BMap.Marker(poi);
                map.addOverlay(mk);
                map.panTo(poi);
            } catch (e) {
                alert(e);
            }
        }
    </script>
</body>
</html>